Keystones — Lintel
Five GCSE retrieval questions · 4 May 2015 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 3,800,000 in standard form
Answer: 3.8 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x - 24
Answer: (x + 3)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 26cm, angle = 42°. Find opposite. Give your answer to 2 decimal places
Answer: 23.41cm -
4. Ratio Mixed ratio problems
£392.00 is shared between A and B in the ratio 3:5. How much does A receive?
Answer: £147.00 -
5. Statistics Mean
Calculate the mean of: 6, 17, 5, 15, 41, 38. Give your answer to 2 decimal places
Answer: 20.33